Answer

sometimes true

Work Step by Step

Distribute 2 to get
$\\\\2x+12 \lt 30$.
$\\\\\\$Subtract $12$ from both sides to get
$\\\\2x \lt 18$.
$\\\\\\$Divide both sides by 2 to get
$\\\\x \lt 9$.
$\\\\\\$Thus, the given inequality is $\text{sometimes true}$.